@misc{indiciaee92873b32b3c,
  title = {Treating cocaine abusers.},
  author = {S T Higgins and W K Bickel},
  year = {1993},
  doi = {10.1176/ps.44.10.1007-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/8305025/},
  note = {Source identifier: 8305025}
}